On Mon, Apr 2, 2012 at 9:58 PM, Richard W.M. Jones rjones@redhat.com wrote:
On Mon, Apr 02, 2012 at 08:32:56PM +0200, Miloslav Trmač wrote:
- #834 F18 Feature: /tmp on tmpfs -
http://fedoraproject.org/wiki/Features/tmp-on-tmpfs (mitr, 17:40:06) * AGREED: tmp-on-tmpfs is accepted (+5 -3) (mitr, 18:12:52)
Actually I think this is a good feature, but ...
The feature page is wrong about "The user experience should barely change. This is mostly a low-level change that has little visibility to the user."
tmpfs is different in a number of important ways:
- it's very limited in space compared to a real disk
Which does not really matter in practice.
- it doesn't support O_DIRECT
Neither does this (which apps needs O_DIRECT on /tmp ? ).
- it doesn't support user extended attrs; and not very old kernels didn't support any xattrs at all, meaning things like SELinux labels don't work
Huh? Why would you run a "very old kernel" on fedora?
All this means it's going to need a bit more testing, since potentially any package that stores a file on /tmp should be tested and may need to be fixed.
Sure if bugs are found they should be fixed. But note I have been doing this testing for a *long* time (long as in years) on different systems and yet have to find a package that breaks.